/**
 * @author LKQ
 * @date 2022/2/22 22:04
 * @description
 */
public class Solution {
    public static void main(String[] args) {

    }
    public boolean checkIfPangram(String sentence) {
        int[] arr = new int[26];
        char[] chars = sentence.toCharArray();
        for (char c: chars) {
            arr[c - 'a'] ++;
        }
        for (int i = 0; i < 26; i++) {
            if (arr[i] < 1) {
                return false;
            }
        }
        return true;
    }
}
